Under water inspection of foundation & Piers by Remote operated Robotoic Vehicle (RORV) & non-destructive testing (NDT/NDE) and submission of detailed remedial scheme along with BOQ at 06 nos. of bridges of Rangiya division on N.F. Railway

A-NON SCHEDULE ITEM

Carrying out detailed Under water Visual inspection of masonry /RCC piers and abutments to identify defects /cracks /spalling /cavities using Under water Remotely Operated 1 Vehicles (ROVs )Technique (Tethers Command Module &Turbid Water module) etc.complete NB: Vehicle to be provided shall travelled upto 25000 Km, vehicle should not be older than 1 year, Service of the vehicle is 24x7 outstation. as directed by Engg incharge.The contractor have to arrange all tools and plants like diving equipment, recording camera ,under water lighting arrangements, lift staging , generator etc. as per site requirement.(Unit - Per pier ).

Cleaning the surface of masonry /RCC piers &Abutments by removing all barnacles( 2 hard & soft algae growth)& loose materials etc all around the piers and abutments for NDT/NDE(Non destructive examination) etc.complete as directed by Engg in charge.The contractor have to arrange all tools and plants like diving equipment, Cleaning equipment, under water lighting arrangements, lift staging ,generator etc as per site requirement.(Unit - Per Pier)

Carrying out detailed Under water Concrete NDE/ NDT tests for masonry /RCC piers 3 and abutments (Ultrasonic Pulse Velocity Tests ) using Under water Remotely Operated Vehicles etc., complete to assess the condition /integrity of the structure and so as to ascertain the requirement of strengthening as directed by Engg in charge.The contractor have to arrange all tools and plants, labour, etc., as per the site requirements.

Processing the data with geo tagging, submitting the detailed software reports & hard 4 copy reports with PAD on a pendrive etc. complete duly integrating under water visual inspection details and NDT details as directed by Engg incharge.( Unit- Per report )and providing software based report alongwith remedial measures including (BOQ).